import re

from django.conf import settings
from django.contrib.auth import authenticate
from django.contrib.auth.backends import ModelBackend

from apps.ausers.models import User
from meiduo_mall.settings.dev import logger
from utils.secret import SecretOauth


def generate_verify_email_url(user):
    #1.构建字典
    data_dict = {"user_id":user.id,"email":user.email}
    #2.加密
    secret_token = SecretOauth().dumps(data_dict)
    # 3.拼接url
    verify_url = settings.EMAIL_ACTIVE_URL + "?token="+secret_token
    #4.返回
    return verify_url

def get_user_by_account(account):
    try:
        # 新增 手机号校验
        if re.match(r'^1[345789]\d{9}$', account):

            user = User.objects.get(mobile=account)
        else:
            user = User.objects.get(username=account)

    except Exception as e:
        logger.error(e)
        return None
    else:
        return user

class UsernameMobileAuthBackend(ModelBackend):
    #重写函数
    def authenticate(self, request, username=None, password=None, **kwargs):
        #接收账户
        user = get_user_by_account(username)
        #校验密码是否正确
        if user and user.check_password(password):
            return user
